Home / 211,200-439,812

Finding the Third Proportional to 211,200 and 439,812

Calculator

Solution

The third proportional to 211,200 and 439,812 is: 915,883.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,200 : 439,812 = 439,812 : x
  2. Step 2: Convert to fraction form
    211,200/439,812 = 439,812/x
  3. Step 3: Cross multiply
    211,200x = 439,812 × 439,812
  4. Step 4: Simplify right side
    211,200x = 193,434,595,344
  5. Step 5: Solve for x
    x = 193,434,595,344/211,200
  6. Step 6: Final answer
    x = 915,883.50

Related Problems

Find third proportional to 105,600 and 219,906
Half scale
Find third proportional to 422,400 and 879,624
Double scale
Find third proportional to 211,202 and 439,816
Similar ratio
Find third proportional to 316,800 and 659,718
1.5x scale

Why These Related Problems?

These problems maintain the same ratio (2.08) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.